Fun times in lower Manhattan during the blackout

As evening approaches, the thing to do is head north on the avenue of your choice. First sign that you are leaving the Dead Zone: at some point (about 16th St if you are on 7th Avenue) iPhones start to work for calling, texting, and e-mail. Keep going, and within a few blocks (25th St on 7th) you will see that building lights and all the traffic lights are on. Stay up in the lighted neighborhoods for a while. Shop for any essentials that aren't sold out, have dinner, and, when you must, you trudge back south to the Dead Zone for home and sleep. (Cabs are available, but what's the hurry?)